Feed-water heater



(No Model.)

A. J. STEVENS. Peed Water Heater.

Patented April 12,188!

Wiihasaes:

N. PEI'ERS. PMOTO LITNOGRAPMEi. wgsHlnGTO D. C,

PATENT FEED-WATER HEATER.

SPECIFICATION forming part of Letters Patent No. 240,197, dated April12, 1881.

Application filed August 6, 1880. (No model.)

To all whom it may concern Be it known that I, ANDREW J. S'rEvnNs, ofSacramento, in the county of Sacramento and State of California, havemade and invented a new and useful Improvement in Feed-Water Reservoirsand Heaters for Steam- Boilers; and I do hereby declare that thefollowing is a full, clear, and exact description of my saidimprovement, and the manner of applying and using the same, referencebeing had to the accompanying drawings.

This invention relates to that class of feedwater reservoirs and heatersof the nature of a separate cylinder or chamber located within, and outofcontact with, the boiler, and adapted to cause the feeding of thewater into the boiler at a raised temperature.

My invention consists in a novel device for introduciugandsupplyingteed-water to steamboilers, and it has for its object to keepthe feed-water from contact with any part of the shell or tubes of theboiler as it is supplied by the pumps, by which I prevent incrustationor deposit of sediment upon the tubes and surface of the plates, andalso avoid irregular and llll proper expansion and contraction of theshell and tubes of the boiler.

To such end and purposes I apply and combine to and with a steam-boilerand within the space inclosed by its shell, but detached and separatetherefrom, a reservoir into which I introduce and supply the feed-water,and from this reservoir 1 cause the Water to flow into the boiler andmingle with the body of water therein, as required, after itstemperature is raised. Such reservoir I supply with water from feedpumpsin the usual manner, and I also provide therewith a means for readilyremoving and cleaning out the sediment or solid matter of any kind thatmay be carried in and deposited by the feed-Water, as will be all morefully described hereinafter.

In the accompanying drawings, I show in Figure 1 the application of myinvention to a locomotive or portable boiler, and in Fig. 2 an end Viewof the same, taken from the front or left-hand side of Fig. 1.

I construct this reservoir of a cylinder, A, closed at one end andprovided at the other end with a head, B, which may be removable, andthis cylinder I insert into the boiler through an opening in thetube-sheet, so that it shall extend into the space at the upper part ofthe boiler above the tubes and have a level position therein. I securethe forward end of the cylinder to the tube-sheet by means of bolts thatpass through the flange of the head B, and I support the cylinder in theboiler by means of straps or brackets D D, depending from the upper partof the shell, or in any other suitable way by which the cylinder isproperly held in a level position without being directly and permanentlysecured or attached to the shell of the boiler at any part thereof. Atand in the head of the cylinder I provide connections E for supply-pipesFleading from the feed-pump, and at the opposite end I provide for thedischarge and flow of the feedwater into the boiler by means of holes orapertures Gmade in and along the upper part of the cylinder. When suchreservoir is arranged in a boiler it is not in contact with the surfaceof the shell or the tubes at any part, and the feed-water supplied tothe cylinder is kept separate from the water in the'boiler until itstemperature is raised, and this elevation of temperature is produced andinsured by causing the feed-water to traverse the length of the cylinderto the openings G at the discharging end before it can enter the boiler.

As the feed-water in this reservoir is subjected to the heat from theboiler, it parts with and deposits its sediment while lying in thereservoir, so that the water passing out through the openings Gr iscomparatively in apure condition or has parted with the greater portionof its solid matter. To provide, therefore, for cleaning out andremoving such matter that may accumulate in the cylinder A, I arrange ablow-oft pipe, H, with the cylinder extending from one to the other endalong and at a short distance from its bottom surface. In and along thebottom of this pipe are holes or apertures t', facing the bottom surfaceof the cylinder, and to its front end, at the head of the cylinder, areconnected suitable blow-01f pipes and cook J outside of the boiler. Thispipe H is fitted into the head B of the cylinder, so that it may bereadily withdrawn, whenever it is desired to more thoroughly clean andwash out the cylinder by taking off the head. By this improvement I keepthe feed-water from coming in contact with any part of the boiler ortubes as it is first fed to the boiler, and I cause its temperature tobe raised before it mingles with the main body of water, so that Iseparate and retain in the reservoir the sediment and solid matter whichwithout this arrangement would be deposited upon and aroundtheboiler-shell and its tubes.

In applying my improvement to a locomotive-boiler, I employ two of thesereservoirs, as illustrated in Figs. 1 and 2 of the drawings abovereferred to.

Having thus fully described my lnvention, what I claim, and desire tosecure by Letters Patent, is-

1. The combination, with the perforated chamber or reservoir A, locatedwithin and out of contact with the boiler, of the pipe H, having ablow-oft cock and pipe, J, and aper- ANDREW J. STEVENS.

In presence of- JOHN RAFFERTY, JAMES BOLAND.

